Go google them!
They're awesome, i listen to them ever since I'm 6. And I'm still in love with their music.
Here's some of my favourites:
There're actually some more, but i'm just too lazy to list them all out. Their songs are just so me.
"Would you mind if i take away your WACOM?"-Amanda.
-3 seconds later-
"I mean YES! YES!"-Jonathan.
"Too late. HAHA."-Amanda